code: def combined_pojo_class_name(glm_model, gbm_model):
      return "Combined_" + glm_model.model_id + "_" + gbm_model.model_id
  
file_path: h2o-3/h2o-py/tests/testdir_generic_model/pyunit_pojo_import.py
imports: import h2o
  from h2o.estimators import H2OGradientBoostingEstimator, H2OGeneralizedLinearEstimator
  from tests import pyunit_utils
  import os
  import sys
  from pandas.testing import assert_frame_equal
label_desc: Use image node_id 1 for calling a global function with example usage: combined_pojo_class_name(glm_model, gbm_model) and returns: unknown